Progress report
What this report will cover
- Rows × Columns — arrays and products
- Flip — the order rule (commutative)
- Break the Wall — the split rule (distributive)
- City Lots — 2-digit × 1-digit with lots
- Four Lots — 2-digit × 2-digit area model
- Twin Lots — squaring and the doubled middle
- Dreamer's Mistake — why 13×13 ≠ 100+9
- Fill the Field — area vs perimeter
Skill areas
| Skill area | Best | Kits | Level |
|---|
Strengths
Growing
Suggested next steps
The grown-up side of the same idea: The area model, a short lesson on Spark & Whetstone, our site for grown-ups — the same rows-and-columns rectangle, grown into 23 × 14.